Rotary pump.



J. H. MYERS. ROTARY PUMP. APPLICATION FILED MAR. 20, 1911.

Patented July '2, 1914.

' that port or the liquid J'Uflll' H. MYERS, 0F EUIFFALG, NEW YORK.

nornniz r'oritr.

ll ,1073,2d&

' Application file d March 20,

To all whom it may concern. I 1 it known that, l, 301m H. Mrnne, u lcitizen of the United States,'residing ot Buil'ulo, in the county 0"lflrie and Strobe of New York, have invented new and useful Improvementsin Rotor-y Pumps, of which the following is n specification.

This invention relates to that type of ro tur'y pumps in which a drumrotntes eccentricelly within u cylinder and is provided with one or moreradially movable pistons enpga 'ng with the inner surface of the wellor? t e cylinder. V

'lhe purpose of this invention is to provide e pump of this character inwhich the pistons ere forced outwardly by liquid pressure instead of byspringe or equivalent merino and thus permit of simplifying theconstruction, reducing the cost and also avoiding noiec end unduoweur anis the case when springs or come are :1 d.

Another object oi my invt on ii. the utilization of this prinoiplo insuch n numner no to obtain quick nnd'positivo notion of the Workingpistons or wings by compelling the liquid pressure-agent, to travel theshortest posoible distance end not directly against the-inner feces ofaid pistons or wings.

With these and other objects in View, my invention consists in therevision of a rotetnblc mornber or drum Irving radially or otihorn'iuemovable pistons or winge adapted to trowel iucontech "with the innersurface of the pump cylinder or casing, distributing ussugeo erred ed insaid rotatable member ehweon the end e thereof and lending; to the innerundo oil 'eoid pistons or wings, and preeuuru pol te loading from theperiphery of said rotatable member and having their inner endsconnecting with solid distributing pussugoe; thus causing the liquidpressure ngent to out n inst the pistons without possibility oi?" theliquid being forced through the pump earning noting no u rcturder to tienotion of used as a pressureugont; and also to prevent the notion of theliquid being forced through the chomp ing an n suction ngent to cnueethe iquid intended ho serve as the priassure-agent noting on u suctionagent. and withdrawing it from the distributing passages and thepressure parts. i

My invention iurlher oonsiuts lil the novel cm'ietruciinn undurrnngomeut, of perte to be l'mreinutter derwrihodP end purticulerlypoint Specification of Letters Patent.

ed out in the eubloined clohnu Patented J my "I, 1914;.

1911. Elorlal1 l'o.615.453.

In the accompanying drawings: Figure l is a vertical cross SBCblOIl of arotary pump embodying my improvements. Fig. 2 isa vertical longitudinulsection of the same in line 2-2, Fig. 1.

Similar letters of reference parts in both figures.

In its general organization the. rotary pump shown in the drawingscomprises :1

refer to like body, a drum and pistons mounted on the drum. The bodycomprises a horizontal cylinder or casing 1 which is provided at.different parts of its periphery with a liqiiid inlet 2 and Zl-llqUlCloutlet; 3 and heads 4, 4 closing opposite ends of the cylinder andprovided .with alincd bearings 53, 5 and dcprossions 15, 15, preferablycircular, on their inner surfaces.

The drum or member 14 is of cylindrical form and rotatable withinthecylinder about an nxis arranged eccenlricelly relatively to the axisof the cylinder and provided at its opposite ends with shafts 6, (Swhich are journnled in the bearings The drum is provided with aplurality of radial guide ways 7 which open at. the pl-riphcry of thedrum, three of such chambers being preferably employed and arrangedequidistant, as shown in the drawings. "In each of the guide chambers isarranged a radially movable piston or wing 8 which engages at its outerend with the inner surface of the ylinde'r or casing.

As the drum rotates forwardly, in the direction indicated by the arrowin'Fig. 1, each piston or wing rcciprocates in its guide chamber as itsweeps successively in contact with the parts of the wall of thecylinder which are near and for from the periphery of the drum. As each)lston passes over the near side 9 of the cylinder between the liquidoutlet and inlet the same is in its fully retrue-ted position. As thepiston mssias the inlet it begins to move outwardly in its guidewuyundreaches its point of greutesr. projection at the far side 10 of thecylinder. 'lhercafter the piston during its continued forwurd rotarymovement is gradually moved inwardly as it approaches the liquid outletand is in its fully retracted osition by the time it passes the liquid,out et. By this means the water is drawn from the inlet into thecylinder-end forced out through the outlet, in a manner well known inthis type of pump.

.The inward mbvemem'n of the piston is increases the volume of Water thepistons owing ed by ca 51 stuns who u o oer ecccntiie 1 e pe" phci ysages outwardly to the periph drum between the ii'eont or? one and theor mother and 15, 15, in the beasts of the cylinder.

vieleil its ity 13 which cooteiued in the iclewe: eiiol insures betterdistribution of t e liquio in the guidewsy at the heginning of theoutward movement the pistons, at the some time serving as amesus tocause a freer and quicker outwelmi' movement iucrcesecl weight of theouter half thereof; the action of which of the pistons is preferably piinner soul with a pocket or cov under centrifugal force caused by therots tion of the clrum, is similar to an anew" traveling through space.It is to he noted, however, that the liquid Within said clepiessionscannot poss behiiiei the pistons until the letter hevecommencedtheir outwei'cl movement ceusscl by the liquid pressureegeut in shedistributing pssse ges; consequently, when employing ssicl depressions,the liquid therein comes into ectiou only uftee the pressureogeut insuirl distributing passages is in action. Theipistous are theseforemovecl outwercl b pressure applied first at points between their endsthe e by creating s central pressure region 'WlHCiTl ussui-es balancedoutward movement oi? the pistons so us to minimize, if not entirelyeliminate, all binding" action The instant the pistons move outwardlythe pressure-agent Within the clepressions'w, 15, moves into action sl din retaining the pistons 01 Wings in contact with the casing.

As the liquid in front of the several pistons is subjected to pressurethe same enters the inner of the guicleways pressure ports analdistributingpessuges, and the inwardly-moving pistons displace thel'iquicl in their receiving guicleweys and in .the depressions 15, 15,forcing the liquid from sairl depressions into the guiclewsys of theoutwardly moving pistons from'the ends of thewlrum, thereby holding thepistons positively in their outermost position solely by etei."pressure. By this mes the of springs {incl equivalent clev es udispensed with MMl construction is not through the i. m i M3113 enablingthe side of the periphery of only simplified but the cost of t is Bminimises-i h'ough (me of the ports While passing the liquid inlet tendsto discharge some of liquid in thisvport the other :two ports whichreoeiving Water under pressure more ofiset any leakage through the oneport, theseby conserving sutficierit Wflbllfi-BI pressure Within thedistributing possuges guide-chambers to hold. the pistons firmly i1engagement with the 'cylii'ider and pump to Work to its fullest ceoueity.

inasmuch as liqu d uuy sporecieble extent thereto by the rotary In doesnot compress to the pressure applied ovement of the -p1stons drum is"transmitted positively to the pistons :ior projecting the some. Owingto the connection between the several iwuide- Weys 'bywth'e distributingpassages and the il-SP GSE4IOHS 15,'15, the pP-BSSUFB m the some isequslit'ezl sud the ump is causezlito work uniformly earl noise'essly.

it will be noted thot eeeli g'uideway on one the drum commuuioetes with.a pressure port leading to the opposite side of the periphery of thedrum so that pistons on the receiving or suction side of full pressureoithe water wllichis being delivered on "he discharge sicle of the pump.

By providing the pistons with pockets or 1 at their inner euols, anyfoseigm matter in the liquid being pumped that moy' lodge behind themwill enter 'said pockets and prevent eledging of the istons in pee".-

iug from the outlet to the inlet, at which ,lng from the posiphei ythereof to one of the drum ere exposed to thethe latter, and a piston orwing movable inmember eccentrically mounted in the cyli eatingguideways, said guideways being in centrically mounted in'said cylinderand hav- 4 7 said distributing passages in the plane of ripliery of saidrotatable member and hav-.

ing communication with the inner ends 0 said guideways at pointscentrally between so said depressions, and pistons or win s movableinwardly and outwardly in sai guide-e ways.

4. A rotary pump comprisin a cylinder wardly and outwardly in each ofsaid guideways.

2. A rotary pump comprising a cylinder having inlet and outlet ports, arotatable inder and having a plurality of communiwith depressions ontheir internal faces, a rotatable member eccentrically mounted in saidcylinder and provided with a plurality of guideways in (omniunication atopposite ends with said depressions, distributing pas- 4 sagesconnecting said guideways centrally between their ends, pressure portsleading inwardly from the periphery of said rota table member and ha ingtheir inner ends connecting with said distributing passages, and pistonsor wings movable inwardly and outwardly in said uidcways.

\Vitness my hand this 11th day of March, 1911.

communication centrally between the ends of said rotatable member,pressure ports leadin inward from the perlphery of said rotata le memberbetween said uideways and being in communication witi the latter, saidpressure ports beixw arranged centrall between the ends 0 said rotatablemem er, and pistons or wings guided in said guideways andmovable-inwardly and outwardly therein.

3. A rotary pump comprising a cylinder having heads providedwithdepressio'iis bn their inner faces, a rotatable member ecing aplurality of guideways extending inwardly from t e peri hery and beingin com munication with the epressions in said heads,

I JOHN H. MYERS. Witnesses: I

E. M. GRAHAM, ANNA HEIGIS.

pressure ports leading inwardly from the pehaving heads at opposite en sprovided 35

